Revert most of my recent changes to RendererMainTest.
Revert most of my recent changes to RendererMainTest.

There's little point in defending against timing out here -- if we time
out the test is broken, and we have existing timeouts to catch broken
tests.

Review URL: http://codereview.chromium.org/3817009

git-svn-id: http://src.chromium.org/svn/trunk/src@62770 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 83453557f5a320f9e02644244536fb2b23204895
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser